PUIA, Ioan, and Petru GUS. “Determining Pedo-Ecological Factors of a Phytocenosis Complex (Sintereag, The Valley of Sieu)”. Notulae Botanicae Horti Agrobotanici Cluj-Napoca 8, no. 2 (August 5, 1976): 69-75. Accessed December 4, 2021. https://www.notulaebotanicae.ro/index.php/nbha/article/view/58.